#include<iostream>
#include<cstdio>
#include<cstring>
#include<vector>
#include<unistd.h>
#include<pthread.h>
#include"lockguard.hpp"

using namespace std;

pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
#define NUM 4

class threadData
{
public:
    threadData(int number)
    {
        threadname = "thread-" + to_string(number);
    }
public:
    string threadname;
};

int tickets = 3000;

void *getTicket(void *args)
{
    threadData *td = static_cast<threadData *>(args);
    const char *name = td->threadname.c_str();
    while(true)
    {
        {
            LockGuard lockguard(&lock);
            if(tickets > 0)
            {
                usleep(1000);
                printf("who=%s, get a ticket %d\n", name, tickets);
                tickets--;
            }
            else
                break;
        }
        usleep(13);//抢到票后不会立马抢下一张，还有很多后续动作用usleep模拟      
    }
    printf("%s ... quit\n", name);
    return nullptr;
}

int main()
{
    vector<pthread_t> tids;
    vector<threadData *> thread_datas;
    for(int i = 1; i <= NUM; i++)
    {
        pthread_t tid;
        threadData *td = new threadData(i);
        thread_datas.push_back(td);
        pthread_create(&tid, nullptr, getTicket, thread_datas[i-1]);
        tids.push_back(tid);
    }

    for(auto thread : tids)
    {
        pthread_join(thread, nullptr);
    }

    for(auto td : thread_datas)
    {
        delete td;
    }

    return 0;
}